Best Iodine Selenium Supplements of 2025

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Iodine Selenium supplements are a combination of two essential minerals that are crucial for maintaining healthy thyroid function and overall well-being. Iodine helps to regulate the production of thyroid hormones, while selenium acts as a powerful antioxidant that supports immune function and protects against oxidative damage. These supplements are particularly beneficial for individuals with thyroid disorders, as well as those who are deficient in these minerals due to dietary restrictions or environmental factors. With regular use, iodine selenium supplements can help to improve energy levels, support healthy metabolism, and promote optimal health and wellness.
At a Glance: Our Top Picks
Top 5 Iodine Selenium Supplements
NUTRAHARMONY Thyroid Support Capsules
NUTRAHARMONY Thyroid Support offers a comprehensive blend of 21 essential nutrients designed to boost thyroid health and overall wellness. With 200 mcg of Selenium, Iodine, and Zinc, this supplement helps enhance your immune system and protects your cells from damage. Additionally, the inclusion of adaptogenic herbs like Ashwagandha and Holy Basil promotes healthy thyroid function for both men and women. Made in the USA under strict quality control, you can trust the purity and effectiveness of each capsule, ensuring you receive the best support for your health needs.
Ioselen Thyroid Support Supplement
Ioselen Thyroid Support is designed to promote healthy thyroid function through a blend of selenium and iodine. The supplement uses L-SeMet, a highly absorbable form of selenium, ensuring that your body can effectively utilize the nutrients. Additionally, it contains 5 mg of BioPerine, a black pepper extract that enhances nutrient absorption even further. This product comes in soft gel capsules made with advanced PEARLtec technology, which improves both absorption and tolerability. With Ioselen, you can enjoy a gluten-free, lactose-free, and non-GMO option that fits various dietary needs.
Kelp with Natural Selenium Iodine
The Kelp with Natural Selenium Iodine is a supplement that contains 200mg of Kelp W/Selenomethionate in 90 capsules. The product is categorized as Selenium Supplements.
Organic Selenium 200 mcg with Iodine and Silica
This Selenium Supplement contains 100% Certified Organic Whole-Food extracts from Mustard Seed Extract, Seaweed, and Bamboo Extract to provide standardised dosages of Selenium, Iodine and Silica. The formula is designed from real foods for real results, free of preservatives, excipients, magnesium stearate, silicon dioxide, and gluten. It is also vegan friendly.
Global Healing Selenium Supplement with Organic Ingredients (60 Capsules)
Global Healing Selenium Supplement with Organic Ingredients is a powerful antioxidant that defends against free radicals to protect normal cell function, maintain cardiovascular health, and support a healthy thyroid and immune system. The organic and vegan capsules are made from certified organic mustard seeds for maximum absorption and are free from gluten, soy, dairy, GMOs, sugar, artificial flavors, synthetic dyes, and toxic fillers. Manufactured in the USA in a cGMP certified facility, the supplement comes with a 30-day guarantee.
Frequently Asked Questions (FAQs)
1. Should you take iodine with selenium?
INTRODUCTION. Adequate intakes of both iodine and selenium are required for optimal thyroid function (1–3). Iodine is an essential component of the thyroid hormones thyroxine (T4) and triiodothyronine (T3), and deficiency will impair synthesis of these hormones.
2. What is selenium and iodine good for?
Micronutrients, mostly iodine and selenium, are required for thyroid hormone synthesis and function. Iodine is an essential component of thyroid hormones and its deficiency is considered as the most common cause of preventable brain damage in the world.
3. Is iodine and selenium the same?
Iodine is the main component of thyroid hormones, namely, thyroxine (T4) and triiodothyronine (T3). Selenium is present in the thyroid gland in high concentrations, and this suggests that selenoproteins may contribute significantly to the integrity and functioning of the gland.
4. What foods are high in selenium and iodine?
Seaweed, such as kelp, nori, and wakame, are naturally rich in iodine--a trace element needed for normal thyroid function. Eat seaweed with sushi or get packaged seaweed snacks to toss in salads. Brazil nuts, macadamia nuts, and hazelnuts are excellent sources of selenium, which helps support healthy thyroid function.
During our iodine selenium supplement research, we found 24 iodine selenium supplement products and shortlisted 5 quality products. We collected and analyzed 30,368 customer reviews through our big data system to write the iodine selenium supplements list. We found that most customers choose iodine selenium supplements with an average price of $17.10.
The iodine selenium supplements are available for purchase. We have researched hundreds of brands and picked the top brands of iodine selenium supplements, including NUTRAHARMONY, Ibsa, Ecological Formulas, Earthier, Global Healing Center. The seller of top 1 product has received honest feedback from 4,664 consumers with an average rating of 4.9.

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